Update update_json_date.yml

.github/workflows/update_json_date.yml

@@ -8,6 +8,9 @@ on:
       - opened
       - synchronize
       - reopened
+permissions:
+  contents: write
+  pull-requests: write
 
 jobs:
   update-json-date:
@@ -18,6 +21,7 @@ jobs:
       uses: actions/checkout@v4
       with:
         ref: ${{ github.head_ref }}
+        token: ${{ secrets.GITHUB_TOKEN }}
     - name: Update Date in JSON-Files 
       run: |